The 2012 Impala LTZ uses a GM Hydra-Matic six-speed automatic transmission, paired with the LTZ’s V6 engine for smooth, confident acceleration and highway efficiency.
Overview of the transmission in the 2012 Impala LTZ
The LTZ trim in 2012 features a front-wheel-drive layout mated to a GM six-speed automatic transmission. This setup is designed to deliver refined shifts and good long-distance fuel economy, aligning with the model’s premium positioning. The exact variant within GM’s Hydra-Matic six-speed family can vary by engine and production date, but the six-speed automatic is the standard configuration for this year and trim.
Before listing the core characteristics of the transmission, here is an at-a-glance description of what owners typically expect from this setup:
- GM Hydra-Matic six-speed automatic transmission (the primary transaxle pairing for the 2012 Impala LTZ).
- Front-wheel-drive platform that integrates the transmission with the vehicle’s V6 powertrain for smooth, consistent shifting.
- Shift programming designed to balance comfort with responsive highway performance.
- Variants in the Hydra-Matic family (such as 6T40/6T70 lineage) referenced in GM documentation, with the exact code dependent on engine and production date.
In short, the 2012 Impala LTZ is equipped with a six-speed automatic from GM’s Hydra-Matic family, with the precise variant varying by engine and production era. This configuration emphasizes smooth shifts and highway efficiency appropriate for the LTZ’s premium character.
Operational notes and maintenance considerations
As with any modern automatic, follow the owner’s manual for service intervals. Transmission fluid checks and changes should be performed by a qualified technician using the recommended GM-fluid specifications. If you notice hard shifts, delayed engagement, slipping, or unusual noises, have the transmission inspected promptly to prevent further damage.
Summary
The 2012 Chevrolet Impala LTZ uses a GM Hydra-Matic six-speed automatic transmission, paired with the model’s V6 engine. While the exact variant can vary by engine and build date, this six-speed automatic is the standard setup for the LTZ of that year, delivering refined driving performance and solid highway efficiency.


